WO2012026389A1 - 送信装置および方法、受信装置および方法、並びに送受信システム - Google Patents

送信装置および方法、受信装置および方法、並びに送受信システム Download PDF

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Publication number
WO2012026389A1
WO2012026389A1 PCT/JP2011/068678 JP2011068678W WO2012026389A1 WO 2012026389 A1 WO2012026389 A1 WO 2012026389A1 JP 2011068678 W JP2011068678 W JP 2011068678W WO 2012026389 A1 WO2012026389 A1 WO 2012026389A1
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Prior art keywords
pdi
question
content
user
answer
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PCT/JP2011/068678
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English (en)
French (fr)
Japanese (ja)
Inventor
山岸　靖明
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ソニー株式会社
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Priority to CN201180040279.0A priority Critical patent/CN103081503B/zh
Priority to EP11819852.2A priority patent/EP2611150A4/de
Priority to MX2013002021A priority patent/MX2013002021A/es
Priority to KR1020187021202A priority patent/KR20180087459A/ko
Priority to JP2012530643A priority patent/JP6022354B2/ja
Priority to KR1020137004125A priority patent/KR101882821B1/ko
Priority to CA2806290A priority patent/CA2806290C/en
Publication of WO2012026389A1 publication Critical patent/WO2012026389A1/ja

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    • H—ELECTRICITY
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    • H04N21/458—Scheduling content for creating a personalised stream, e.g. by combining a locally stored advertisement with an incoming stream; Updating operations, e.g. for OS modules ; time-related management operations
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    • H—ELECTRICITY
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    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
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    • H04H60/65—Arrangements for services using the result of monitoring, identification or recognition covered by groups H04H60/29-H04H60/54 for using the result on users' side
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    • H04H—BROADCAST COMMUNICATION
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    • H04H60/68—Systems specially adapted for using specific information, e.g. geographical or meteorological information
    • H04H60/73—Systems specially adapted for using specific information, e.g. geographical or meteorological information using meta-information
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    • H04N21/8543—Content authoring using a description language, e.g. Multimedia and Hypermedia information coding Expert Group [MHEG], eXtensible Markup Language [XML]

Definitions

  • the present invention relates to a transmission apparatus and method, a reception apparatus and method, and a transmission / reception system, and more particularly to a transmission apparatus and method, a reception apparatus and method, and a transmission / reception system that enable content to be acquired according to metadata. .
  • a filtering attribute also referred to as a filtering index, filtering metadata, etc.
  • a filtering attribute also referred to as a filtering index, filtering metadata, etc.
  • the content filtering sorting is performed in the client that receives (acquires) the content.
  • Filtering attributes are set as values for metadata elements selected from metadata sets defined by standardization organizations such as ATSC (Advanced Television Standard Committee) and ARIB (Association of Radio Industries and Businesses).
  • a content to which “viewing target” is selected as a metadata element and a filtering attribute with “10s” set as a value for the metadata element is given as ““ viewing target is teenage ” It is provided to a client that performs filtering so as to acquire “content for viewers”.
  • the provider side could not distribute the content given the viewer's interest as metadata according to the needs at that time (for example, considering the fashion).
  • the present invention has been made in view of such a situation, and makes it possible to acquire content according to the needs at that time.
  • the transmission device is a transmission device that distributes content to a client, and that generates question information that is information representing a question about a user preference of the client, and the question Transmitting means for transmitting information and provider-side answer information, which is information on a bit string representing an answer set by the provider who provides the content, to the client in response to a question about the user's preference Prepare.
  • the transmission device further includes metadata generation means for generating the metadata including the provider-side answer information as metadata of the content corresponding to the answer set by the provider, and the transmission means Can send the metadata to the client.
  • a transmission method is a transmission method of a transmission device that distributes content to a client, and generates a question information that is information representing a question about a user preference of the client; And transmitting to the client the question information and provider-side answer information, which is information on a bit string representing an answer set by the provider who provides the content, in response to a question about the user's preference. Steps.
  • question information which is information representing a question about a user's preference of a client
  • Provider-side answer information which is bit string information representing the set answer, is transmitted to the client.
  • a receiving device is a receiving device that acquires content distributed from a server, and corresponds to question information that is transmitted from the server and represents information about a user's preference. Then, an answer generating means for generating user side answer information which is information of a bit string representing the user's answer to the question, the answer information, and the content sent to the question sent from the server Matching means for determining acquisition of the content distributed from the server by performing matching with provider-side answer information that is information on a bit string representing an answer set by a provider who provides the content.
  • the matching unit can determine the acquisition of the content corresponding to the metadata including the provider-side answer information by performing the matching.
  • a receiving method is a receiving method for a receiving device that acquires content distributed from a server, and is a question that is transmitted from the server and represents information about a user's preference.
  • an answer generation step of generating user side answer information which is bit string information representing the user's answer to the question, the answer information, and the question transmitted from the server
  • a user-side answer that is bit string information that represents a user's answer to the question in response to question information that is transmitted from the server and represents a question about the user's preference.
  • Information is generated and the response information is matched with the provider-side response information, which is bit string information representing the response set by the provider who provides the content for the question sent from the server.
  • a transmission / reception system is a transmission / reception system including a transmission device that distributes content and a reception device that acquires the content distributed from the transmission device, wherein the transmission device receives the reception Question generating means for generating question information, which is information representing a question about a user's preference of the device, the question information, and a question about the user's preference, set by a provider who provides the content
  • a provider-side reply information that is information of a bit string representing a reply
  • a transmission unit that transmits the information to the reception apparatus, wherein the reception apparatus corresponds to the question information transmitted from the transmission apparatus, Answer generating means for generating user side answer information which is information of a bit string representing the user's answer to the question, the user side answer information, and the transmission Device by performing matching between the provider side answer information transmitted from, and a matching means for determining the acquisition of the content distributed from the transmission device.
  • the question information which is the information showing the question about the user preference of a receiver is produced
  • the provider-side answer information which is bit string information representing the answer set in step S1
  • user-side response information which is bit string information representing the user's response to the question, is generated, and the user-side response information and the provider side transmitted from the transmission device By matching with the reply information, acquisition of the content distributed from the transmission device is determined.
  • FIG. 1 It is a block diagram which shows the structural example of the broadcast system which broadcasts by an ATSC-M / H system to which this invention is applied. It is a figure which shows the protocol stack in the signal of the broadcast wave transmitted by ATSC-M / H system. It is a figure which shows the data structure of Service-Guide. It is a figure explaining the structure of a Service fragment. It is a figure explaining the structure of a Schedule fragment. It is a figure explaining the structure of Content fragment. It is a figure explaining the structure of Interactivity Data fragment. It is a figure which shows the protocol stack in the signal of the broadcast wave transmitted by NRT broadcast. It is a figure which shows the data structure of TVCT, PAT, PMT, and DSM-CC
  • FIG. 1 shows a configuration example of a broadcasting system according to an embodiment of the present invention.
  • a broadcasting system 10 in FIG. 1 includes a server 11 installed on a provider side such as a broadcaster that broadcasts (provides) a digital television program (hereinafter referred to as “content” as appropriate), and a user's home that views the broadcasted content.
  • the client terminal hereinafter simply referred to as a client 12 installed in the network.
  • the client 12 is installed in each of a plurality of user homes, but may be configured as a portable terminal device such as a mobile phone or a PDA (Personal Digital Assistant).
  • the server 11 sends content metadata regarding the content together with the content to the client 12 as a digital broadcast wave signal.
  • the client 12 reproduces or accumulates only the content desired by the user by filtering the content based on the content metadata transmitted together with the content.
  • the content metadata may be sent before the content is sent instead of being sent together with the content.
  • FIG. 2 illustrates a hardware configuration example of the server 11.
  • the server 11 is configured based on a computer, for example.
  • the CPU (Central Processing Unit) 21 executes various processes according to a program stored in a ROM (Read Only Memory) 22 or a program loaded from a storage unit 28 to a RAM (Random Access Memory) 23.
  • the RAM 23 also appropriately stores data necessary for the CPU 21 to execute various processes.
  • the CPU 21, ROM 22, and RAM 23 are connected to each other via a bus 24.
  • An input / output interface 25 is also connected to the bus 24.
  • the input / output interface 25 includes an input unit 26 including a keyboard and a mouse, a display including a CRT (Cathode Ray Tube) and an LCD (Liquid Crystal Display), an output unit 27 including a speaker, and a hard disk.
  • a communication unit 29 including a storage unit 28, a modem, a terminal adapter, and the like is connected. The communication unit 29 communicates with an external device via a network (not shown). A program may be acquired via the communication unit 29 and stored in the storage unit 28.
  • a drive 30 is connected to the input / output interface 25 as necessary, and a removable medium 31 such as a magnetic disk, an optical disk, a magneto-optical disk, or a semiconductor memory is appropriately mounted, and a computer program read from them is Installed in the storage unit 28 as necessary.
  • a removable medium 31 such as a magnetic disk, an optical disk, a magneto-optical disk, or a semiconductor memory is appropriately mounted, and a computer program read from them is Installed in the storage unit 28 as necessary.
  • the hardware of the client 12 is similarly configured as shown in FIG.
  • the server 11 includes a PDI-Q generator 41, a transmission unit 42, a PDI-A generator 43, a metadata distributor 44, a content storage unit 45, and a content distributor 46.
  • the PDI-Q generator 41 generates PDI-Q (Preference-Demographic-and-Interest--Question) that is information indicating a question about the preference of the user (viewer) of the client 12 and transmits the PDI-Q to the client 12 via the transmission unit 42. At the same time, it is supplied to the PDI-A generator 43.
  • PDI-Q Preference-Demographic-and-Interest--Question
  • the transmission unit 42 transmits various data supplied from the PDI-Q generator 41, the metadata distributor 44, and the content distributor 46 to the client 12.
  • the PDI-A generator 43 Based on the PDI-Q from the PDI-Q generator 41, the PDI-A generator 43 represents an answer set by the provider to the above-described question about the user preference of the client 12 corresponding to the PDI-Q.
  • Information PDI-A (Preference-Demographic-and-Interest--Answer) is generated and supplied to the metadata distributor 44.
  • the metadata distributor 44 specifies (inquires) the content corresponding to the answer set by the provider from the content stored in the content storage unit 45 based on the PDI-A from the PDI-A generator 43.
  • the metadata distributor 44 generates content metadata including PDI-A as the content metadata of the identified content, and transmits the content metadata to the client 12 via the transmission unit 42.
  • the content storage unit 45 stores various contents distributed to the client 12.
  • the content distributor 46 acquires the content specified by the metadata distributor 44 from the content stored in the content storage unit 45 and transmits it to the client 12 via the transmission unit 42.
  • the client 12 includes a receiving unit 51, a PDI-A generator 52, a PDI-A storage unit 53, a content filter 54, a content reproduction unit 55, and a content storage unit 56.
  • the receiving unit 51 receives various data transmitted from the server 11 and supplies the data to the PDI-A generator 52 or the content filter 54.
  • the PDI-A generator 52 Based on the PDI-Q transmitted from the server 11, the PDI-A generator 52 generates a PDI-A representing the user's answer to the question about the user preference of the client 12 corresponding to the PDI-Q, The data is supplied to the PDI-A storage unit 53.
  • the PDI-A storage unit 53 stores the PDI-A from the PDI-A generator 52.
  • the PDI-A stored in the PDI-A storage unit 53 is read by the content filter 54 as appropriate.
  • the content filter 54 reads PDI-A from the PDI-A storage unit 53, and based on the PDI-A and the PDI-A included in the content metadata of the content transmitted from the server 11, the content filter 54 Filter.
  • the content filter 54 supplies the filtered content to the content reproduction unit 55 or the content storage unit 56 according to the filtering result.
  • the content playback unit 55 plays back the content from the content filter 54.
  • the content playback unit 55 acquires content from the content storage unit 56 and plays back the content.
  • the content storage unit 56 stores (records) the content from the content filter 54.
  • the provider side such as a broadcaster
  • the provider side staff In response to the operation, the PDI-Q generator 41 of the server 11 asks the viewer, that is, the user of the client 12, what kind of preference or attribute the PDI-Q generator 41 has in step S11. Is generated.
  • the first line shows the declaration and definition for identifying PDI-Q
  • the second line shows the name and type declaration of the entire question defined as PDI-Q. .
  • Lines 3 through 12 show the name and type declarations for each of the questions declared in line 2.
  • the question type “IntegerAnswerType” defined by the name “QIA” on the fifth line indicates that the question is a question that requires an integer value type answer.
  • the question type “BooleanAnswerType” defined by the name “QBA” indicates that the question is a question for which a logical value type answer is required.
  • the question type “SelectionAnswerType” defined by the name “QSA” on the seventh line indicates that the question is a question that requires an answer selection type answer.
  • the question type “TextAnswerType” defined by the name indicates that the question is a question that requires a character string type answer.
  • the question type “AnyAnswerType” defined by the name “QAA” on the ninth line indicates that the question does not limit the answer type.
  • Lines 13 to 44 declare the elements of each of the questions declared as above, defined by the names “QIA”, “QBA”, “QSA”, and “QTA”. Show.
  • the id element shown in the 15th, 24th, 31st, and 40th lines represents an ID (Identifier) for identifying each question item.
  • “Common: [category:] question-ID” Is defined. In this first format, “common” indicates that the question identified by the id element is a commonly defined question regardless of provider, “category” indicates the category of the question, and “question” -ID "represents the identifier of the question.
  • “category” “Common: [category1: category2: category3: ...] question-ID” A hierarchical nested structure may be used.
  • the id element has the second format, “ProviderName: [category:] question-ID” Is defined.
  • “providerName” represents the name of the provider that sets the question identified by the id element. Note that “category” and “question-ID” are the same as those in the first format.
  • questions defined as PDI-Q are distinguished by the id element between questions that do not depend on the provider that provides the content (common to providers) and questions that are defined independently by the provider that provides the content. .
  • provider common filtering parameters questions that do not depend on the provider that provides the content, and answers to those questions will be referred to as provider common filtering parameters. Questions that are defined by the provider that provides the content and answers to those questions will be This is an original filtering parameter.
  • the provider common filtering parameter is defined in common for each provider regardless of individual providers, and therefore generally provided by a vendor (manufacturer, etc.) of the client 12. Therefore, the PDI-Q generator 41 in the server 11 can be provided by the provider side, but can also be provided by the vendor of the client 12.
  • “transactional” in the first line indicates the contents of each item of PDI-Q when the question (question group) defined in PDI-Q is updated in the transmitted client 12. All the contents of each item of PDI-Q are not recorded / updated due to some accident in the middle of the process of recording / updating to the storage area (not shown) due to a disk accident or interruption of processing due to increased processing load. Is the value indicating whether or not this recording / updating process is not performed (so-called rollback) by going back to the state immediately before recording / updating the contents of each item of PDI-Q. If is true, the PDI-Q is rolled back.
  • the second to fifth lines define a question that asks for a Boolean answer.
  • the 10th to 17th lines define a question for an answer selection type answer.
  • ⁇ Id> ProviderA 123 ⁇ / id> in the 11th line specifies the id element of the question, and ⁇ q> In which of the following sports are you most interested? (Multiple selection allowed)
  • ⁇ / q> represents the question itself
  • ⁇ a> Soccer ⁇ /a> in the 15th line
  • ⁇ a> Hockey ⁇ /a> in the 16th line represent options of answers to the questions.
  • minChoice "1"
  • the 25th to 28th lines define a question for a character string type answer.
  • ⁇ Id> ProviderA: 321 ⁇ / id> in the 26th line specifies the id element of the question, and ⁇ q> Who's products are you most interested in recently? ⁇ / q> represents the question itself.
  • each question defined by PDI-Q in FIG. 7 is referred to as a question of each id element.
  • the questions defined in the 2nd to 5th lines are called “Common: 111” questions, and the questions defined in the 6th to 9th lines are called “Common: 222” questions.
  • the questions defined in the 10th to 17th lines are called “ProviderA: 123” questions, the questions defined in the 18th to 24th lines are called “ProviderA: ProgramX: 123” questions, 25
  • the questions defined in the lines 28 to 28 are called “ProviderA: 321” questions.
  • the “Common: 111” question and the “Common: 222” question are distinguished by the provider common filtering parameters, the “ProviderA: 123” question, the “ProviderA: ProgramX: 123” question, and the “ProviderA: The question “321” is distinguished by provider-specific filtering parameters.
  • the “Common: 111” question indicates that the identifier is “111”, which is set in common with the provider, and the “ProviderA: ProgramX: 123” question is “ProviderA”. This indicates that the category (program ID) set by the provider is “ProgramX” and the identifier is “123”.
  • step S ⁇ b> 12 the PDI-Q generator 41 of the server 11 transmits the generated PDI-Q to the client 12 via the transmission unit 42 and supplies it to the PDI-A generator 43.
  • step S ⁇ b> 21 the receiving unit 51 of the client 12 receives the PDI-Q transmitted from the server 11 and supplies it to the PDI-A generator 52.
  • the PDI-Q is received by the client 12 every time it is broadcast (transmitted) at a predetermined time interval from a broadcast station as a provider in which the server 11 is installed, for example. Further, the PDI-Q may be received by the client 12 when the channel is matched with the broadcasting station where the server 11 is installed in the client 12.
  • step S22 the PDI-A generator 52 of the client 12 generates PDI-A for the question defined by the PDI-Q received by the receiving unit 51. Specifically, when the PDI-A generator 52 receives the PDI-Q from the server 11, the PDI-A generator 52 displays a screen corresponding to the question defined in the PDI-Q on a display unit (not shown). By causing the user (viewer) of the client 12 to input or select an answer to the question, PDI-A representing the answer is generated. That is, the PDI-A generator 52 generates PDI-A representing an answer to the question defined by PDI-Q by interacting with the user.
  • Example of screen display in user interaction with PDI-A generator [Example of screen display in user interaction with PDI-A generator]
  • FIG. 8 to FIG. 12 an example of screen display in the dialogue with the user by the PDI-A generator 52 will be described.
  • the client 12 has received the PDI-Q described with reference to FIG. 7, and a display unit (not shown) of the client 12 displays a question group defined by the received PDI-Q. Assume that the corresponding screens are displayed sequentially.
  • FIG. 8 shows a screen display example corresponding to the “Common: 111” question among the questions defined in the PDI-Q described with reference to FIG.
  • the question “Are you currently employed?” Shown in the fourth line of FIG. 7 is displayed in the question presentation unit 61. Further, a message prompting the user to input an answer to the question “Please select one”, a selection button 62-1 for causing the user to select “Yes” as an answer to the question, and a question As a response to this, a selection button 62-2 for causing the user to select “No” is displayed.
  • FIG. 9 shows a screen display example corresponding to the “Common: 222” question among the questions defined in the PDI-Q described with reference to FIG.
  • the question “What is the age of the oldest member of the household who watches television?” Shown in the eighth line of FIG.
  • a message for prompting the user to input an answer to the question “Please input age” and an answer input unit 72 for causing the user to input an integer value as an answer to the question are displayed.
  • FIG. 10 shows a screen display example corresponding to the question “ProviderA: 123” among the questions defined in PDI-Q described with reference to FIG.
  • a message prompting the user to input an answer to the question “Please select one or more of the following, and choose from three or less”, and options “Baseball”, “Basketball”, “ Selection buttons 82-1 to 82-4 for causing the user to select “Soccer” and “Hockey” are displayed.
  • FIG. 11 shows a screen display example corresponding to the question “ProviderA: ProgramX: 123” among the questions defined in PDI-Q described with reference to FIG.
  • a message prompting the user to enter an answer to the question “Please select one from the following.” And choices “Never”, “Occasionally”, and “Frequently” as answers to the question.
  • Selection buttons 92-1 to 92-3 for allowing the user to select are displayed.
  • FIG. 12 shows a screen display example corresponding to the question “ProviderA: 321” among the questions defined in PDI-Q described with reference to FIG.
  • a message “Please describe freely” prompting the user to input an answer to the question, and an answer input unit 102 for causing the user to input a character string as an answer to the question is displayed.
  • the PDI-A generator 52 allows the PDI-Q to input or select an answer to the question defined in the PDI-Q by the screen display described with reference to FIGS. Generate the corresponding PDI-A.
  • the screen display described in FIGS. 8 to 12 may be displayed shortly after receiving PDI-Q, or after receiving PDI-Q, PDI-Q is stored in a storage unit (not shown). It may be held, and may be displayed when the display of the setting screen is instructed by the user.
  • Example of PDI-A an example of PDI-A generated by the PDI-A generator 52 will be described with reference to FIG.
  • the PDI-A shown in FIG. 13 is a PDI-A generated based on the selection or input of an answer by the user with respect to the screen display shown in FIGS.
  • the second to fifth lines indicate the user's answer to the question presented by the screen display described in FIG. That is, ⁇ id> Common: 111 ⁇ / id> in the third line indicates the id element of the question presented by the screen display of FIG. 8, and ⁇ a> true ⁇ /a> in the fourth line is the question 8 shows that the selection button 62-1 ("Yes" answer) is selected by the user in the screen display of FIG.
  • Lines 6 through 9 show the user's answers to the questions presented by the screen display described in FIG. That is, ⁇ id> Common: 222 ⁇ / id> in the seventh line indicates the id element of the question presented by the screen display of FIG. 9, and ⁇ a> 34 ⁇ /a> in the eighth line is the question 9 shows that “34” is input as an integer value to the answer input unit 72 in the screen display of FIG.
  • the 10th to 15th lines indicate the user's answers to the questions presented by the screen display described in FIG. That is, ⁇ id> ProviderA: 123 ⁇ / id> in the 11th line indicates the id element of the question presented by the screen display of FIG. 10, and ⁇ a> Baseball ⁇ /a>, 13 in the 12th line. ⁇ a> Soccer ⁇ /a> in the line and ⁇ a> Hockey ⁇ /a> in the 14th line are answers to the question, and the selection buttons 82-1, 82-3 and 82-4 are displayed in the screen display of FIG. It is selected by the user.
  • the 16th to 19th lines indicate the user's answers to the questions presented by the screen display described in FIG. That is, ⁇ id> ProviderA: ProgramX: 123 ⁇ / id> in the 17th line indicates the id element of the question presented by the screen display of FIG. 11, and ⁇ a> Occasionally ⁇ /a> in the 18th line. Indicates that the selection button 92-2 has been selected by the user in the screen display of FIG. 11 as an answer to the question.
  • the 20th to 23rd lines indicate the user's answers to the questions presented by the screen display described in FIG. That is, ⁇ id> ProviderA: 321 ⁇ / id> on the 21st line indicates the id element of the question presented by the screen display of FIG. 12, and ⁇ a> Somy ⁇ /a> on the 22nd line indicates the question. 12 shows that “Somy” is input as a character string to the answer input unit 102 in the screen display of FIG.
  • the PDI-A generator 52 supplies the PDI-A generated in this way to the PDI-A storage unit 53 for storage.
  • the PDI-A stored in the PDI-A storage unit 53 is used when determining whether or not the content distributed from the server 11 matches the user preference of the client 12, as will be described later.
  • the PDI-A generator 43 of the server 11 generates PDI-A for the question defined by PDI-Q from the PDI-Q generator 41, and the metadata distributor 44.
  • the PDI-A generator 43 is described on a display unit (not shown) with reference to, for example, FIGS.
  • a screen corresponding to the question defined in PDI-Q is displayed, and an answer to the question is input or selected by the staff of the broadcasting station, thereby generating PDI-A representing the answer.
  • the staff of the broadcasting station inputs or selects an answer corresponding to the content to be distributed as an answer to the question defined in PDI-Q. That is, the PDI-A generated by the PDI-A generator 43 is information that allows the provider side to take into account the user (viewer) preference of the client 12 and allow the viewer to view the content that will be distributed later. (Answer).
  • the metadata distributor 44 specifies (inquires) the content corresponding to PDI-A from the content stored in the content storage unit 45 based on the PDI-A from the PDI-A generator 43.
  • the content specified here may be such that the similarity between PDI-A from the PDI-A generator 43 and content metadata pre-assigned to the stored content is higher than a predetermined value, The content may be pre-selected by the station staff as content that the user wants to view.
  • the content specified by the metadata distributor 44 is acquired from the content storage unit 45 by the content distributor 46.
  • the metadata distributor 44 includes content metadata including PDI-A based on the content metadata previously given to the content specified in step S15 and the PDI-A from the PDI-A generator 43. Is newly generated.
  • step S16 the transmission unit 42 distributes the acquired content to the content distributor 46 together with the content metadata generated by the metadata distributor 44.
  • content metadata in addition to the content metadata generated by the metadata distributor 44, content metadata defined by a standardization organization may be transmitted.
  • steps S13 to S16 do not need to be performed immediately after the process in step S12, and are performed until the PDI-A is generated and stored in the client 12 owned by each user. It only has to be.
  • step S16 the content is distributed with the content metadata.
  • the content may not be distributed with the content metadata, and the content metadata including PDI-A is transmitted to the client 12 in advance. Later, content corresponding to the content metadata may be distributed.
  • step S23 the receiving unit 51 of the client 12 receives the content and content metadata distributed from the server 11, and the content filter 54 is received. To supply.
  • step S24 the content filter 54 matches the PDI-A stored in the PDI-A storage unit 53 with the PDI-A included in the content metadata from the server 11.
  • the former is referred to as user-side PDI-A
  • the latter is called provider-side PDI-A.
  • the provider-side PDI-A shown in FIG. 14 has the same basic configuration as the user-side PDI-A shown in FIG. 13 and will not be described in detail. “False” is selected as the answer to the “Common: 111” question, “Baseball” is selected as the answer to the “ProviderA: 123” question, and “Never” is selected as the answer to the “ProviderA: ProgramX: 123” question It has been shown.
  • the content filter 54 compares the user side PDI-A and the provider side PDI-A, and if at least one answer to the question matches, the user side PDI-A and the provider side PDI-A If it is determined that there is a match and no answer to the question matches, it is determined that the user side PDI-A and the provider side PDI-A do not match. In this case, each of the answer to the question “ProviderA: 123” in the user side PDI-A shown in FIG. 13 and the answer to the question “ProviderA: 123” in the provider side PDI-A shown in FIG. ”Is included, and the user side PDI-A and the provider side PDI-A are determined to match.
  • the PDI-A shown in FIG. 15 is transmitted from the server 11 as the provider-side PDI-A.
  • the provider-side PDI-A shown in FIG. 15 confirms that “Basketball” has been selected as the answer to the “ProviderA: 123” question and “Never” has been selected as the answer to the “ProviderA: ProgramX: 123” question. Show.
  • the content filter 54 performs matching processing between the user-side PDI-A and the provider-side PDI-A.
  • step S25 the content filter 54 determines whether or not the user side PDI-A matches the provider side PDI-A. If it is determined in step S25 that the user-side PDI-A and the provider-side PDI-A match, the content filter 54 matches the user (viewer) preference of the client 12 for the content distributed from the server 11. The content is determined to be content, the content is supplied to the content reproduction unit 55 or the content storage unit 56, and the process proceeds to step S26.
  • the content reproduction unit 55 reproduces the content in step S26.
  • the content storage unit 56 stores (records) the content in step S26. The accumulated content is appropriately supplied to the content reproduction unit 55 and reproduced in accordance with a user operation instruction.
  • step S25 if it is determined in step S25 that the user-side PDI-A and the provider-side PDI-A do not match, the content filter 54 determines that the content distributed from the server 11 is the preference of the user (viewer) of the client 12 It is determined that the content does not meet the requirements, the content is discarded (deleted), and the process ends.
  • the server on the provider side, the server generates a PDI-Q representing a question about the user's preference, and the PDI-Q is transmitted to the client terminal.
  • the provider side PDI-A representing the answer set by the provider side is distributed as content metadata of the corresponding content.
  • content metadata other than the content metadata defined by the standardization organization can be given to the content as content metadata according to the needs at that time.
  • the client terminal on the user side, the client terminal generates a user side PDI-A representing the user's answer to the PDI-Q from the server, and the generated user side PDI-A and the provider side PDI-A from the server. Whether or not to acquire the content distributed from the server is determined.
  • content can be filtered by content metadata according to the needs at that time other than the content metadata defined by the standardization organization. Therefore, it is possible to acquire content according to the needs at that time.
  • the client 12 performs PDI-A matching in real time when the content is distributed from the server 11, but when the content is distributed from the server 11, all the content is accumulated.
  • PDI-A matching is performed in the background of the process, and the content corresponding to the matched PDI-A (provider side PDI-A) is played or the content corresponding to the unmatched PDI-A Or may be deleted.
  • the content filter 54 compares the user side PDI-A expressed as an instance with the provider side PDI-A, and determines whether the user side PDI-A matches even one answer to the question. -A and provider-side PDI-A are matched, but either user-side PDI-A or provider-side PDI-A is expressed as a query that evaluates PDI-A. You may make it compare PDI-A and provider side PDI-A.
  • Example 1 of matching process by query that evaluates PDI-A First, a configuration for comparing the user side PDI-A and the provider side PDI-A by expressing the provider side PDI-A as a query will be described.
  • FIG. 16 shows a functional configuration example of the server 11 in which the provider side PDI-A is expressed as a query.
  • 16 includes a PDI-Q generator 41, a transmission unit 42, a content storage unit 45, a content distributor 46, a PDI-A query generator 111, and a metadata distributor 112.
  • the server 11 of FIG. 16 differs from the server 11 of FIG. 3 in that a PDI-A query generator 111 and a metadata distributor 112 are provided in place of the PDI-A generator 43 and the metadata distributor 44. .
  • the PDI-A query generator 111 generates PDI-A (provider side PDI-A) corresponding to PDI-Q based on the PDI-Q from the PDI-Q generator 41, and generates the generated provider side PDI-A.
  • a PDI-A query applied to a predetermined conditional statement is generated and supplied to the metadata distributor 112.
  • the metadata distributor 112 Based on the PDI-A query from the PDI-A query generator 111, the metadata distributor 112 identifies (inquires) the content corresponding to the PDI-A query from the content stored in the content storage unit 45. . The metadata distributor 112 generates content metadata including a PDI-A query as content metadata of the identified content, and transmits the content metadata to the client 12 via the transmission unit 42.
  • the content filter 54 of FIG. 4 reads PDI-A (user side PDI-A) from the PDI-A storage unit 53, and is transmitted from the user side PDI-A and the server 11. Since it is the same as the client 12 of FIG. 4 except that the content is filtered based on the PDI-A query included in the received content metadata, the description thereof will be omitted.
  • steps S31, S32, S36, S41 to S43, S45, and S46 in the flowchart of FIG. 17 are basically the same as the processes in steps S11, S12, S16, S21 to S23, S25, and S26 in the flowchart of FIG. Since it is the same, the description is omitted.
  • the PDI-A query generator 111 of the server 11 generates a provider side PDI-A for the question defined by the PDI-Q from the PDI-Q generator 41, and generates the generated provider side PDI-A.
  • a PDI-A query in which is applied to a predetermined conditional statement is generated and supplied to the metadata distributor 112.
  • the PDI-A query generator 111 refers to, for example, FIG. 8 to FIG.
  • the screen corresponding to the question defined in PDI-Q as explained above is displayed, and the answer to the question is input or selected by the staff of the broadcasting station, and each answer combination (filtering condition) ) Is determined by the staff, and a PDI-A query representing the combination of the answers is generated.
  • the staff of the broadcasting station inputs or selects an answer corresponding to the content to be distributed as an answer to the question defined in PDI-Q, and further determines the combination. That is, the PDI-A query generated by the PDI-A query generator 111 is for the provider side to take into account the user (viewer) preference of the client 12 and to allow the viewer to view the content to be distributed later. Information (combination of responses).
  • the metadata distributor 112 specifies content corresponding to the PDI-A query from the content stored in the content storage unit 45 based on the PDI-A query from the PDI-A query generator 111.
  • the content specified here may be such that the degree of similarity between the PDI-A query from the PDI-A query generator 111 and the content metadata previously given to the stored content is higher than a predetermined value.
  • the content may be pre-selected by the broadcast station staff as content that the user wants to view.
  • the content specified by the metadata distributor 112 is acquired from the content storage unit 45 by the content distributor 46.
  • the metadata distributor 112 includes a PDI-A query based on the content metadata previously given to the content identified in step S34 and the PDI-A query from the PDI-A query generator 111. Create new content metadata.
  • step S ⁇ b> 44 the content filter 54 of the client 12 matches the PDI-A stored in the PDI-A storage unit 53 based on the PDI-A query included in the content metadata from the server 11. .
  • the user side PDI-A selects “true” as the answer to the “Common: 111” question and “Baseball” as the answer to the “ProviderA: 123” question. It shows that it is evaluated whether or not.
  • the content filter 54 evaluates the user side PDI-A based on the PDI-A query, and if the PDI-A query is satisfied (becomes true), the user side PDI-A And the PDI-A query are matched, and if the PDI-A query is not satisfied (false), the user-side PDI-A and PDI-A query match Judge that it is not.
  • “true” is selected as the answer to the “Common: 111” question
  • “Baseball” is selected as the answer to the “ProviderA: 123” question. Therefore, it is determined that the user-side PDI-A and the PDI-A query match.
  • FIG. 18 shows a functional configuration example of the client 12 in which the user side PDI-A is expressed as a query.
  • a reception unit 51 includes a reception unit 51, a content filter 54, a content reproduction unit 55, a content storage unit 56, a PDI-A query generator 131, and a PDI-A query storage unit 132.
  • the client 12 of FIG. 18 differs from the client 12 of FIG. 4 in that a PDI-A query generator 131 and a PDI-A query storage unit 132 are used instead of the PDI-A generator 52 and the PDI-A storage unit 53. It is a point provided.
  • the PDI-A query generator 131 is a PDI-A (user side) that represents a user's answer to a question about the user preference of the client 12 corresponding to the PDI-Q.
  • PDI-A is generated, and a PDI-A query in which the generated user-side PDI-A is applied to a predetermined conditional statement is generated and supplied to the PDI-A query storage unit 132.
  • the PDI-A query storage unit 132 stores the PDI-A query from the PDI-A query generator 131.
  • the PDI-A query stored in the PDI-A query storage unit 132 is read by the content filter 54 as appropriate.
  • server 11 in this example is the same as the server 11 in FIG. 3, the description thereof will be omitted.
  • steps S51 to S61, S63, S65, and S66 in the flowchart of FIG. 19 are basically the same as the processes in steps S11 to S21, S23, S25, and S26 in the flowchart of FIG. Omitted.
  • step S62 the PDI-A query generator 131 of the client 12 generates a user side PDI-A for the question defined by the PDI-Q received by the receiving unit 51, and generates the generated user side PDI-A.
  • a PDI-A query in which is applied to a predetermined conditional statement is generated. Specifically, for example, when the PDI-A query generator 131 receives PDI-Q from a broadcasting station, the PDI-A query generator 131 displays a PDI as described with reference to FIGS.
  • a PDI-A screen corresponding to the question defined in Q is displayed, and the user (viewer) of the client 12 inputs or selects an answer to the question, and further, the combination of each answer (filtering condition) is selected by the user.
  • the PDI-A query generator 131 generates a PDI-A query that represents a combination of answers to the questions defined in PDI-Q by interacting with the user.
  • step S64 the content filter 54 matches the provider-side PDI-A included in the content metadata from the server 11 based on the PDI-A query stored in the PDI-A query storage unit 132. .
  • provider side PDI-A selects “false” as the answer to the “Common: 111” question and “Baseball” as the answer to the “ProviderA: 123” question. It shows that it is evaluated whether or not.
  • the content filter 54 evaluates the provider-side PDI-A based on the PDI-A query. If the provider-side PDI-A satisfies (is true) the PDI-A query, the content-side PDI-A And the PDI-A query are matched, and if the PDI-A query is a provider-side PDI-A that is not satisfied (false), the provider-side PDI-A and the PDI-A query match Judge that it is not. In this case, in the provider side PDI-A shown in FIG.
  • the present invention can be applied to a broadcasting system for broadcasting a digital television program.
  • an ATSC-M / H Mobile that extends an ATSC (Advanced Television Standard Committee) system to mobile reception is available. / Handheld) can be applied to a broadcasting system for broadcasting.
  • FIG. 20 is a diagram illustrating a configuration example of a broadcasting system that broadcasts a digital television program using the conventional ATSC system and ATSC-M / H to which the present invention is applied.
  • the server 11 in the broadcasting system 10 of FIG. 1 corresponds to the server 11 in the broadcasting system 10 of FIG. 1, and includes an ATSC Legacy System 151, an ATSC M / H System 152, an M / H Framing 153, and an RF / Transmission System 154.
  • the ATSC Legacy System 151 is a conventional ATSC system and transmits a broadcast stream by MPEG2-TS (Moving Picture Experts Group 2 Transport Stream).
  • the ATSC M / H System 152 transmits a broadcast stream of IP packets in the ATSC-M / H system.
  • Control Data 152a in the ATSC M / H System 152 is control information regarding a broadcast stream (A / V (Audio / Video) content) transmitted from the ATSC M / H System 152.
  • Each broadcast stream described above is multiplexed by M / H Framing 153 and transmitted as a broadcast wave by RF / Transmission System 154. Note that the details of the function of each block are described in the ATSC standard, and the description thereof is omitted here.
  • FIG. 21 shows a protocol stack in a broadcast wave signal transmitted by the ATSC-M / H system.
  • Service Guide defines metadata of content provided by the ATSC-M / H method.
  • Control Data 152a shown in FIG. 20 is transmitted as content metadata defined by “Service ⁇ Guide” (hereinafter simply referred to as “Service Guide”). That is, in the broadcasting system of FIG. 20, the PDI-A (provider side PDI-A), the PDI-A query, and the PDI-Q transmitted from the server 11 to the client 12 in the broadcasting system 10 described above are stored in Service Guide. To be sent.
  • the lower hierarchy “FLUTE” adjacent to “Service ⁇ Guide ”and the lower hierarchy“ ALC ”adjacent to“ FLUTE ” are packetized by UDP / IP (User Datagram Protocol / Internet Protocol). It is a hierarchy for transferring the service Guide.
  • the data structure shown in FIG. 22 is defined by OMA (Open Mobile Alliance).
  • OMA Open Mobile Alliance
  • the details of the configuration of Service Guide shown in FIG. 22 are defined in ““ Service Guide for Mobile Broadcast Services ”,” Open Mobile Alliance, “OMA-TSBCAST_ServiceGuide-V1_0, Candidate Version 1.0”, and the description thereof is omitted. To do.
  • PDI-A (provider side PDI-A) or PDI-A query is one of the “Service” fragment, “Schedule” fragment, and “Content” fragment of the elements constituting Service Guide shown in FIG. It is stored in at least one of them.
  • “Service” fragment is metadata including control information related to the contents of the channel service, and FIG. 23 shows details of the configuration.
  • the PDI-A or PDI-A query is stored in the “Service” fragment shown in FIG. 23 by adding a “PDI-A” element to the “PrivateExt” element defined at the bottom. Is done.
  • the “Schedule” fragment is metadata including control information related to the distribution schedule of content (digital television program), and FIG. 24 shows the details of the configuration.
  • the PDI-A or PDI-A query is stored in the “Schedule” fragment shown in FIG. 24 by adding a “PDI-A” element to the “PrivateExt” element defined at the bottom. Is done.
  • “Content” fragment is metadata including control information related to the content (digital television program), and FIG. 25 shows the details of the configuration.
  • the PDI-A or PDI-A query is stored in the “Content” fragment shown in FIG. 25 by adding a “PDI-A” element to the “PrivateExt” element defined at the bottom. Is done.
  • PDI-Q is stored in the “Interactivity Data” fragment among the elements constituting the Service Guide shown in FIG.
  • the “Interactivity Data” fragment is metadata about an application related to a channel service or content (television program), and FIG. 26 shows the details of the configuration.
  • the PDI-Q is stored in the “Interactivity Data” fragment shown in FIG. 26 by adding a “PDI-Q” element to the “PrivateExt” element defined at the bottom.
  • the present invention may also be applied to a broadcasting system that performs NRT (Non-RealTime) broadcasting using the conventional ATSC system. it can.
  • NRT broadcasting since it is not presumed that content is viewed in real time, it is not necessary to reproduce the content in synchronization with the broadcast time of the content broadcast by the broadcast signal as data.
  • FIG. 27 shows a protocol stack in a broadcast wave signal transmitted by NRT broadcasting.
  • the lowest layer is “Physical Layer”, and the frequency band of the broadcast wave corresponds to this.
  • the upper layer adjacent to “Physical Layer” is “MPEG2-TS”, and a broadcast stream broadcast as a broadcast wave corresponds to this.
  • ATSC-PSIP Program and System Information Protocol
  • MPEG2-PSI Program Specific Information
  • DSM-CC Digital Storage Media Command Command and Control
  • FIG. 28 shows the data structure of TVCT, PAT, PMT, and DSM-CC Addressable Section.
  • control information related to a broadcast stream broadcast in MPEG2-TS is described.
  • MPEG2 that transfers DSM-CC Addressable Section for transferring an IP packet stream (UDP / IP Packets) -TS is specified.
  • IP is shown as the upper layer adjacent to “DSM-CC Addressable Section”
  • UDP is shown as the upper layer adjacent to “IP”.
  • “Service Signaling Channel” and “FLUTE / ALC (File Delivery over Unidirectional Transport / Asynchronous Layered Coding Protocol)” are shown as upper layers adjacent to “UDP”.
  • the “Service Signaling Channel” is a hierarchy having SMT (Service Map Table) and NRT-IT (NRT Information Table).
  • SMT Service Map Table
  • NRT-IT NRT Information Table
  • FLUTE Session is shown as an upper layer adjacent to “FLUTE / ALC”.
  • “FLUTE Session” is a hierarchy having FLUTE-FDT (File Delivery Table) and A / V File (A / V file).
  • FIG. 29 shows the data structure of SMT, NRT-IT, and FLUTE FDT. Metadata about the channel is described in SMT, and metadata about the content is described in NRT-IT. SMT and NRT-IT are transferred by the above-mentioned “Service Signaling Channel”. In FLUTE FDT, information for identifying each A / V file is described. The A / V file is transferred by “FLUTE / ALC” described above.
  • PDI-A provider side PDI-A
  • PDI-A query PDI-A query
  • the SMT service level descriptordeloop (the bottom row of “Service # 1” in the figure) is set to PDI-A, PDI- A new “PDI descriptor” that stores A queries or PDI-Q is defined.
  • the PDI-A and PDI-A queries are placed in the NRT-IT service level descriptordeloop (the bottom row of “Content # 1” in the figure). Or “PDI descriptor” for storing PDI-Q.
  • FIG. 30 shows an example of the syntax of “PDI descriptor”.
  • each descriptor to be described is defined together with the number of bits (No. of Bits) and a format (Format).
  • PDI-A, PDI-A query, or PDI-Q is described in a descriptor “PDI_Q_or PDI_A or PDI_A_Query” which is a variable bit.
  • the present invention can also be applied to a broadcasting system that performs NRT broadcasting.
  • the present invention may be applied to a broadcast system that broadcasts using the ATSC-M / H system described above, or a broadcast system that broadcasts NRT broadcast using a system other than the line broadcast system.
  • the client 12 in the broadcasting system 10 described above generates a user-side PDI-A by interacting with the user by a screen display corresponding to the question defined by the PDI-Q from the server 11. I made it. If the question set (generated) on the provider side has simple contents, the client 12 can interact with the user by the screen display shown in FIGS. 8 to 12, but is set on the provider side. If the question is content that requires a high degree of interactivity (for example, content that branches in a complicated condition depending on the user's selection), the screen display as shown in FIGS. You may not be able to interact with the user. In such a case, since it becomes impossible to generate PDI-A that accurately reflects the user's preferences, it is not possible to obtain accurate filtering conditions, and as a result, it is possible to acquire content according to the needs at that time become unable.
  • the question set (generated) on the provider side has simple contents
  • the client 12 can interact with the user by the screen display shown in FIGS. 8 to 12, but is set
  • PDI-S generator 31 includes a transmission unit 42, a metadata distributor 44, a content storage unit 45, a content distributor 46, a PDI-S generator 311, and a PDI-S execution unit 312.
  • the server 11 of FIG. 31 differs from the server 11 of FIG. 3 in that a PDI-S generator 311 and a PDI-S execution unit 312 are provided instead of the PDI-Q generator 41 and the PDI-A generator 43. It is.
  • the PDI-S generator 311 generates a PDI-S (Preference-Demographic-and-Interest-Script) that is a script for obtaining a user-side PDI-A that represents a user's answer to a question about the user (viewer) preference of the client 12 Then, the data is transmitted to the client 12 via the transmission unit 42 and supplied to the PDI-S execution unit 312.
  • PDI-S includes Web browsers and other applications.
  • the PDI-S execution unit 312 executes the PDI-S from the PDI-S generator 311 so that the provider-side PDI-A that represents the answer set by the provider is answered to the question about the user preference of the client 12. It is generated and supplied to the metadata distributor 44.
  • a receiving unit 51 includes a receiving unit 51, a PDI-A storage unit 53, a content filter 54, a content reproduction unit 55, a content storage unit 56, a PDI-S execution unit 321, and a history information storage unit 322.
  • the client 12 of FIG. 32 differs from the client 12 of FIG. 4 in that a PDI-S execution unit 321 is provided instead of the PDI-A generator 52, and a history information storage unit 322 is newly provided.
  • the PDI-S execution unit 321 executes the PDI-S transmitted from the server 11 to generate a user-side PDI-A representing the user's answer to the question about the user preference of the client 12, and PDI-S A is supplied to the storage unit 53.
  • the PDI-S execution unit 321 executes PDI-S based on history information to be described later as necessary.
  • the history information storage unit 322 stores history information representing the action history of the user who owns the client 12.
  • the history information stored in the history information storage unit 322 is read by the PDI-S execution unit 321 as necessary.
  • processing in steps S114 to S116 and S123 to S126 in the flowchart in FIG. 33 is basically the same as the processing in steps S14 to S16 and S23 to S26 in the flowchart in FIG.
  • the provider side such as a broadcaster
  • the provider side In response to the operation of the staff, the PDI-S generator 311 of the server 11 represents the answer of the user to the question of what kind of preference or attribute the viewer, ie, the user of the client 12, has in step S111.
  • a PDI-S for obtaining the user-side PDI-A is generated.
  • first to 44th lines in the syntax shown in FIG. 34 are the same as the first to 44th lines in the syntax shown in FIG.
  • the 45th to 50th lines are the elements of the question (question whose question type is “AnyAnswerType”) defined by the name “QAA” among the questions declared in the 5th to 9th lines. Indicates a declaration.
  • the id element shown in the 47th line represents an ID for identifying the item of the question, and the format is the same as the provider-specific filtering parameter (“providerName: [category:] question-ID”) Defined by
  • the question defined by the name “QAA” (question whose question type is “AnyAnswerType”) and the answer to the question are classified into provider-specific filtering parameters. Since the question defined by the name “QAA” does not limit the answer type, the question (q element) is not defined in the 45th to 50th lines.
  • the answer (a element) to the question defined by the name “QAA” can be in a format that can be understood only by the provider who set the question, as will be described later. This is a provider-specific filtering parameter.
  • step S112 the PDI-S generator 311 of the server 11 transmits the generated PDI-S to the client 12 via the transmission unit 42 and supplies it to the PDI-S execution unit 312. .
  • step S121 the receiving unit 51 of the client 12 receives the PDI-S transmitted from the server 11 and supplies the PDI-S to the PDI-S executing unit 321.
  • the PDI-S may be received by the client 12 every time it is broadcast (transmitted) at a predetermined time interval from a broadcasting station as a provider in which the server 11 is installed. 12 may be received by the client 12 when the channel is adjusted to the broadcasting station where the server 11 is installed.
  • step S122 the PDI-S execution unit 321 of the client 12 generates the user-side PDI-A by performing PDI-S execution processing.
  • the details of the PDI-S execution process by the PDI-S execution unit 321 will be described with reference to FIG.
  • the PDI-S execution unit 321 displays a screen corresponding to the question defined in the PDI-S on a display unit (not shown), and represents the answer to the question
  • the user selects whether to automatically generate the side PDI-A or to generate the user side PDI-A according to the input of the user (viewer) of the client 12.
  • step S131 the PDI-S execution unit 321 determines whether automatic generation of the user-side PDI-A is selected. If it is determined in step S131 that automatic generation of the user-side PDI-A is selected on a screen displayed on a display unit (not shown), the process proceeds to step S132.
  • step S132 the PDI-S execution unit 321 executes PDI-S to read the history information from the history information storage unit 322, and generates the user side PDI-A based on the history information. Specifically, the PDI-S execution unit 321 analyzes the user's preference from the user's behavior history represented by the history information read from the history information storage unit 322, and based on the preference analysis result, the PDI-S Generate a user-side PDI-A that represents the answer to the defined question.
  • the PDI-S execution unit 321 analyzes the user's preference from the user's behavior history represented by the history information stored in the database on the external network via the reception unit 51, and generates the preference analysis result. Based on this, a user-side PDI-A representing an answer to a question defined by PDI-S is generated.
  • the PDI-S execution unit 321 executes the PDI-S and interacts with the user, thereby responding to the question defined in the PDI-S with an accurate reflection of the user's preference. Generate user-side PDI-A to represent.
  • step S131 if it is determined in step S131 that automatic generation of PDI-A has not been selected on a screen displayed on a display unit (not shown), the process proceeds to step S133.
  • step S133 the PDI-S execution unit 321 generates a user-side PDI-A corresponding to a user input on a screen displayed on a display unit (not shown). Specifically, the PDI-S execution unit 321 causes the user (viewer) of the client 12 to input or select an answer to a question defined in PDI-S displayed on a display unit (not shown). Thus, the user side PDI-A representing the answer is generated.
  • FIG. 36 shows a screen display example corresponding to the question “ProviderA: 123” in FIG.
  • an answer to the message “In12which12of the following sports are you most interested? (Multiple selection allowed) with reference to the recent viewing history is automatically included in the 12th line of FIG. Click this button to generate a password.
  • you want to specify it yourself select one or more of the following from the list below, and a history reference button 341 that displays "and a candidate answer to the question”
  • Selection buttons 342-1 to 342-4 for causing the user to select the options “Baseball”, “Basketball”, “Soccer”, and “Hockey” are displayed.
  • the PDI-S execution unit 321 stores, for example, a history representing a television program viewing history for the past month from the history information storage unit 322.
  • the user's preference is analyzed, and from the answer candidates for the “ProviderA: 123” question, the one that has a strong relationship with the preference analysis result is selected, and the user side PDI-A representing the answer Is generated.
  • FIG. 37 shows a screen display example corresponding to the question “ProviderA: ProgramX: 123” in FIG.
  • an answer to the message “Do you enjoy camping and outdoor recreation? (Only one selection) is automatically generated with reference to the recent action history including the question shown in the 20th line of FIG. If you want to specify it yourself, please select one of the following: “Browse history” button 351 and “Never” as an answer candidate for the question. Selection buttons 352-1 to 352-3 for causing the user to select “Occasionally” and “Frequently” are displayed.
  • the PDI-S execution unit 321 records from the history information storage unit 322, for example, a schedule table or the like that has gone out for the past month.
  • User's preference is analyzed by reading the history information that is displayed, and the user who selects the answer candidate for the “ProviderA: ProgramX: 123” question that is strongly related to the preference analysis result, and represents the answer Create side PDI-A.
  • FIG. 38 shows a screen display example corresponding to the question “ProviderA: 321” in FIG.
  • a message including the question shown in the 27th line of FIG. 7 is referred to when an answer to Who's products are you most interested in recently? Please press the button. If you want to specify it yourself, please enter the manufacturer name below. "The history reference button 361 is displayed, and an answer to let the user enter a character string as an answer to the question An input unit 362 is displayed.
  • the PDI-S execution unit 321 searches the database of the company that operates the shopping site on the Internet, for example, in the past month.
  • the user's preference is analyzed by reading the history information that represents PDI-A representing the answer to the question “ProviderA: 321” based on the analysis result.
  • FIG. 39 shows a screen display example corresponding to the question “ProviderA: Special: 999” which is not included in the question defined by PDI-Q described with reference to FIG. It is assumed that the question “ProviderA: Special: 999” is the above-described question whose question type is “AnyAnswerType”.
  • a message containing a question given by PDI-S “If you can automatically generate an answer to What subject are you most interested in recently? With reference to recent conversation history, press this button. If you think that you have taken care of it, please press the Cancel button below. "A history reference button 371 is displayed, and a cancel button 372 for canceling the answer to the question is displayed.
  • the PDI-S execution unit 321 reads, for example, past 1 from the database of a company that provides SNS (Social Network Service) on the Internet. By reading historical information representing conversations (sentences) exchanged during the week, user preferences are analyzed, and PDI-A that represents answers to the “ProviderA: Special: 999” question is generated based on the analysis results. .
  • SNS Social Network Service
  • the user's answer is selected from the answer candidates for the question defined in PDI-S, but the history information storage unit 322 and the external information are displayed.
  • a candidate answer to the question may be inferred from the user's behavior history represented by the history information stored in the database, and the user's answer may be selected from the inferred answer candidate.
  • FIG. 40 shows another example of the screen display corresponding to the question “ProviderA: 123” in FIG.
  • the following three can be considered as candidates, but please select at least one of them.
  • the question presentation unit 381 in which“ is displayed ”and the options“ Basketball ”,“ Selection buttons 382-1 to 382-3 for causing the user to select “Soccer” and “Hockey” are displayed.
  • the PDI-S execution unit 321 executes PDI-S, reads out history information representing a viewing history of a television program for the past month, for example, from the history information storage unit 322, and sets the user's preference. By analyzing, the candidate of the answer to the question “ProviderA: 123” is inferred, and the corresponding selection button is displayed as in the screen shown in FIG. When the selection button is selected by the user, the PDI-S execution unit 321 generates a user-side PDI-A representing an answer corresponding to the selected selection button.
  • the PDI-S execution unit 321 automatically generates a user-side PDI-A that represents an answer to the question defined by the PDI-S based on the user history information by executing the PDI-S. Or generate a user-side PDI-A that represents an answer to a question that is input or selected by the user.
  • Example of PDI-A an example of PDI-A (user side PDI-A) generated by the PDI-S execution unit 321 will be described with reference to FIG. It is assumed that PDI-A shown in FIG. 41 is PDI-A generated based on the user history information.
  • the second to seventh lines indicate the user's answers that are automatically generated in response to the question presented by the screen display described with reference to FIG. That is, ⁇ id> ProviderA: 123 ⁇ / id> in the third line indicates the id element of the question presented by the screen display of FIG. 36, and ⁇ a> Baseball ⁇ /a>, five lines in the fourth line ⁇ a> Soccer ⁇ /a> in the eyes and ⁇ a> Hockey ⁇ /a> in the sixth line indicate the answers selected based on the user's history information by the PDI-S execution unit 321 as answers to the questions. Yes.
  • the 8th to 11th lines indicate user responses that are automatically generated in response to the questions presented by the screen display described in FIG. That is, ⁇ id> ProviderA: ProgramX: 123 ⁇ / id> in the ninth line indicates the id element of the question presented by the screen display of FIG. 37, and ⁇ a> Occasionally ⁇ /a> in the tenth line. Indicates an answer selected as a response to the question by the PDI-S execution unit 321 based on the history information of the user.
  • the 12th to 15th lines indicate user responses that are automatically generated in response to the questions presented by the screen display described with reference to FIG. That is, ⁇ id> ProviderA: 321 ⁇ / id> in the 13th line indicates the id element of the question presented by the screen display of FIG. 38, and ⁇ a> Somy ⁇ /a> in the 14th line indicates the question.
  • ⁇ id> ProviderA: 321 ⁇ / id> in the 13th line indicates the id element of the question presented by the screen display of FIG. 38
  • ⁇ a> Somy ⁇ /a> in the 14th line indicates the question.
  • a> indicates an answer generated by the PDI-S execution unit 321 based on the user history information as an answer to the question.
  • the PDI-S execution unit 321 supplies the user-side PDI-A generated in this way to the PDI-A storage unit 53 and stores it.
  • the user-side PDI-A stored in the PDI-A storage unit 53 is used when determining whether or not the content distributed from the server 11 matches the user preference of the client 12, as will be described later. .
  • the user-side PDI-A stored in the PDI-A storage unit 53 is updated when the PDI-S is executed by the PDI-S execution unit 321 at the execution cycle specified in advance by the provider side. It is made like that.
  • the PDI-S execution unit 312 of the server 11 generates a provider side PDI-A for the question defined by the PDI-S from the PDI-S generator 311. Supplied to the metadata distributor 44. Specifically, the PDI-S execution unit 312 analyzes or executes the PDI-S by the operation of the staff of the broadcasting station (provider side), and displays a display unit (not shown) on, for example, FIG. 36 to FIG. The screen corresponding to the question defined in PDI-S as described above is displayed, and provider side PDI-A representing the answer to the question is generated.
  • the staff of the broadcasting station analyzes or executes the PDI-S, thereby selecting an answer corresponding to the content to be distributed as an answer to the question defined in the PDI-S.
  • the provider-side PDI-A generated by the PDI-S execution unit 312 takes into account the user's (viewer) preference of the client 12 on the provider side, and allows the viewer to view the content to be distributed later. Information (answer) for this purpose.
  • content corresponding to the generated provider-side PDI-A is specified (inquired), and content metadata including the provider-side PDI-A is generated as content metadata of the specified content.
  • the specified content is distributed together with the generated content metadata.
  • the content may not be distributed together with the content metadata, and after the content metadata including the provider side PDI-A is transmitted to the client 12 in advance, the content corresponding to the content metadata is distributed. You may make it do.
  • the client 12 receives the content and content metadata distributed from the server 11, and the user side PDI-A and the provider side PDI-A are matched.
  • the PDI-A described with reference to FIG. 41 is generated and stored as the user-side PDI-A, and the PDI-A illustrated in FIG. Suppose that it has been sent.
  • the provider-side PDI-A shown in FIG. 42 has the same basic configuration as the user-side PDI-A shown in FIG. This indicates that “Baseball” is set as an answer to the question “ProviderA: 123” and “Never” is set as an answer to the question “ProviderA: ProgramX: 123”.
  • the client 12 compares the user side PDI-A and the provider side PDI-A, and if at least one answer to the question matches, the user side PDI-A and the provider side PDI-A match. If no answer to the question matches, it is determined that the user side PDI-A and the provider side PDI-A do not match. In this case, the “Baseball: 123” question on the user side PDI-A shown in FIG. 41 and the “ProviderA: 123” question on the provider side PDI-A shown in FIG. ”Is included, and the user side PDI-A and the provider side PDI-A are determined to match.
  • the provider-side PDI-A shown in FIG. 43 confirms that “Basketball” has been selected as the answer to the “ProviderA: 123” question and “Never” has been selected as the answer to the “ProviderA: ProgramX: 123” question. Show.
  • the answer to the question on the user side PDI-A shown in FIG. 41 and the answer to the question on the provider side PDI-A shown in FIG. 43 do not match, so the user side PDI-A and the provider side PDI -A is determined not to match.
  • Whether or not the distributed content is acquired is determined by the result of such matching processing.
  • the server on the provider side, the server generates a PDI-S for obtaining the user side PDI-A for the question about the user's preference, and transmits the PDI-S to the client terminal Then, the provider side PDI-A representing the answer set by the provider side is distributed as content metadata of the corresponding content to the PDI-S.
  • content metadata other than the content metadata defined by the standardization organization can be given to the content as content metadata according to the needs at that time.
  • PDI-S from the server is executed by the client terminal to generate user-side PDI-A, and the generated user-side PDI-A and provider-side PDI-A from the server Whether or not to acquire the content distributed from the server is determined.
  • content can be filtered by content metadata according to the needs at that time other than the content metadata defined by the standardization organization. Therefore, it is possible to acquire content according to the needs at that time.
  • the client terminal can interact with the user via PDI-S, even if the questions set on the provider side require a high level of interactivity, it is possible to interact with the user sufficiently. become able to. Therefore, it is possible to generate user-side PDI-A that accurately reflects the user's preferences, so that it is possible to obtain accurate filtering conditions, and more reliably to acquire content that meets the needs at that time. Is possible.
  • the user side PDI-A or the provider side PDI-A can be expressed as a query that evaluates the PDI-A.
  • the matching may be performed by comparing the side PDI-A and the provider side PDI-A.
  • FIG. 44 shows a functional configuration example of the server 11 in which the provider side PDI-A is expressed as a query.
  • a transmission unit 42 includes a transmission unit 42, a content storage unit 45, a content distributor 46, a PDI-S generator 311, a PDI-S execution unit 391, and a metadata distributor 392.
  • the server 11 of FIG. 44 differs from the server 11 of FIG. 31 in that a PDI-S execution unit 391 and a metadata distributor 392 are provided in place of the PDI-S execution unit 312 and the metadata distributor 44. is there.
  • the PDI-S execution unit 391 executes the PDI-S from the PDI-S generator 311 so that the provider side PDI-A representing the answer set by the provider side is answered to the question about the user preference of the client 12.
  • a PDI-A query in which the generated provider-side PDI-A is applied to a predetermined conditional statement is generated and supplied to the metadata distributor 392.
  • the metadata distributor 392 Based on the PDI-A query from the PDI-S execution unit 391, the metadata distributor 392 identifies (inquires) the content corresponding to the PDI-A query from the content stored in the content storage unit 45. . The metadata distributor 392 generates content metadata including a PDI-A query as content metadata of the specified content, and transmits the content metadata to the client 12 via the transmission unit 42.
  • the content filter 54 in FIG. 32 reads the user-side PDI-A from the PDI-A storage unit 53, and the content metadata transmitted from the user-side PDI-A and the server 11. Since it is the same as the client 12 of FIG. 32 except that the content is filtered based on the PDI-A query included in FIG. 32, the description thereof is omitted.
  • steps S151, S152, S156, S161 to S163, S165, and S166 in the flowchart in FIG. 45 is basically the same as the processing in steps S111, S112, S116, S121 to S123, S125, and S126 in the flowchart in FIG. Since it is the same, the description is abbreviate
  • step S153 the PDI-S execution unit 391 of the server 11 generates a provider side PDI-A for the question defined by the PDI-S from the PDI-S generator 311 and generates the generated provider side PDI-A. Is applied to a metadata distributor 392 by generating a PDI-A query in which is applied to a predetermined conditional statement.
  • the PDI-S execution unit 391 analyzes or executes the PDI-S by the operation of the staff of the broadcasting station (provider side), and see, for example, FIG. 36 to FIG.
  • a PDI-A query representing the combination of the answers is generated.
  • the broadcasting station staff analyzes or executes the PDI-S, and selects the answer corresponding to the content to be distributed as the answer to the question defined in the PDI-S, and further selects the combination.
  • the PDI-A query generated by the PDI-S execution unit 391 is for the provider side to take into account the preference of the user (viewer) of the client 12 and allow the viewer to view the content to be distributed later. Information (combination of responses).
  • the metadata distributor 392 identifies the content corresponding to the PDI-A query from the content stored in the content storage unit 45 based on the PDI-A query from the PDI-S execution unit 391.
  • the content specified here may be such that the degree of similarity between the PDI-A query from the PDI-S execution unit 391 and the content metadata previously given to the stored content is higher than a predetermined value.
  • the content may be pre-selected by the broadcast station staff as content that the user wants to view.
  • the content specified by the metadata distributor 392 is acquired from the content storage unit 45 by the content distributor 46.
  • the metadata distributor 392 includes a PDI-A query based on the content metadata previously given to the content identified in step S154 and the PDI-A query from the PDI-S execution unit 391. Create new content metadata.
  • step S164 the content filter 54 of the client 12 matches the user-side PDI-A stored in the PDI-A storage unit 53 based on the PDI-A query included in the content metadata from the server 11. I do.
  • the above PDI-A query indicates that the user side PDI-A evaluates whether or not “Baseball” is selected as an answer to the question “ProviderA: 123”.
  • the content filter 54 evaluates the user side PDI-A based on the PDI-A query, and if the PDI-A query is satisfied (becomes true), the user side PDI-A And the PDI-A query are matched, and if the PDI-A query is not satisfied (false), the user-side PDI-A and PDI-A query match Judge that it is not.
  • “Baseball” is selected as the answer to the question “ProviderA: 123”, so the user side PDI-A and the PDI-A query match. It is determined that
  • FIG. 46 shows a functional configuration example of the client 12 in which the user side PDI-A is expressed as a query.
  • a receiving unit 51 includes a receiving unit 51, a content filter 54, a content reproduction unit 55, a content storage unit 56, a history information storage unit 322, a PDI-S execution unit 401, and a PDI-A query storage unit 402. .
  • the client 12 of FIG. 46 differs from the client 12 of FIG. 32 in that a PDI-S execution unit 401 and a PDI-A query storage unit 402 are used instead of the PDI-S execution unit 321 and the PDI-A storage unit 53. This is the point.
  • the PDI-S execution unit 401 generates and generates a user-side PDI-A representing the user's answer to the question about the user preference of the client 12 by executing the PDI-S transmitted from the server 11 A PDI-A query in which the user-side PDI-A is applied to a predetermined conditional statement is generated and supplied to the PDI-A query storage unit 132.
  • the PDI-A query storage unit 402 stores the PDI-A query from the PDI-S execution unit 401.
  • the PDI-A query stored in the PDI-A query storage unit 402 is read by the content filter 54 as appropriate.
  • server 11 in this example is the same as the server 11 of FIG. 31, the description thereof is omitted.
  • steps S171 to S181, S183, S185, and S186 in the flowchart of FIG. 47 is basically the same as the processing of steps S111 to S121, S123, S125, and S126 in the flowchart of FIG. Omitted.
  • step S182 the PDI-S execution unit 401 of the client 12 generates a PDI-A query by performing PDI-S execution processing.
  • the PDI-S execution unit 401 displays a screen corresponding to the question defined in the PDI-S on a display unit (not shown), and represents the user's answer to the question Allows the user to select whether to automatically generate a PDI-A query in which the side PDI-A is applied to a predetermined conditional statement, or to generate a PDI-A query according to the input of the user (viewer) of the client 12 .
  • step S191 the PDI-S execution unit 401 determines whether automatic generation of a PDI-A query has been selected. If it is determined in step S191 that automatic generation of PDI-A is selected on a screen displayed on a display unit (not shown), the process proceeds to step S192.
  • the PDI-S execution unit 401 reads the history information from the history information storage unit 322 by executing PDI-S, and generates a PDI-A query based on the history information. Specifically, the PDI-S execution unit 401 analyzes the user's preference from the user's behavior history represented by the history information read from the history information storage unit 322, and based on the preference analysis result, the PDI-S Generate answers to the defined questions. Furthermore, the PDI-S execution unit 401 generates a PDI-A query representing the combination of answers by determining each answer combination (filtering condition) based on the history information.
  • the PDI-S execution unit 401 analyzes the user's preference from the user's behavior history represented by the history information stored in the database on the external network via the reception unit 51, and generates the preference analysis result. Based on this, an answer to the question defined by PDI-S is generated. Furthermore, the PDI-S execution unit 401 generates a PDI-A query representing the combination of answers by determining each answer combination (filtering condition) based on the history information.
  • the PDI-S execution unit 401 executes PDI-S and interacts with the user, thereby responding to the question defined in the PDI-S with an accurate reflection of the user's preference. Generate a PDI-A query to represent.
  • step S191 if it is determined in step S191 that automatic generation of a PDI-A query is not selected on a screen displayed on a display unit (not shown), the process proceeds to step S193.
  • the PDI-S execution unit 401 generates a PDI-A query corresponding to a user input on a screen displayed on a display unit (not shown). Specifically, the PDI-S execution unit 401 allows the user (viewer) of the client 12 to input or select an answer to a question defined in PDI-S displayed on a display unit (not shown). Further, by causing the user to determine the combination of the respective answers (filtering conditions), a PDI-A query representing the combination of the answers is generated.
  • the PDI-S execution unit 401 supplies the PDI-A query generated in this way to the PDI-A query storage unit 402 and stores it.
  • step S184 the content filter 54, based on the PDI-A query stored in the PDI-A query storage unit 402, provides the provider side PDI- included in the content metadata from the server 11. Match A.
  • provider side PDI-A selects “Baseball” as the answer to the “ProviderA: 123” question, and “Never” as the answer to the “ProviderA: ProgramX: 123” question. It shows that it is evaluated whether or not it is selected.
  • the content filter 54 evaluates the provider-side PDI-A based on the PDI-A query. If the provider-side PDI-A satisfies (is true) the PDI-A query, the content-side PDI-A And the PDI-A query are matched, and if the PDI-A query is a provider-side PDI-A that is not satisfied (false), the provider-side PDI-A and the PDI-A query match Judge that it is not. In this case, in the provider-side PDI-A shown in FIG.
  • “Baseball” is selected as the answer to the “ProviderA: 123” question
  • “Never” is the answer to the “ProviderA: ProgramX: 123” question. Is selected, it is determined that the provider-side PDI-A and the PDI-A query match.
  • the PDI-A (provider side PDI-A) or PDI-A query is, as described above, the “Service” fragment (FIG. 23) among the elements constituting the Service Guide shown in FIG. , “Schedule” fragment (FIG. 24), and “Content” fragment (FIG. 25).
  • the PDI-S is stored in the “Interactivity Data” fragment among the elements constituting the Service Guide shown in FIG.
  • FIG. 49 shows the details of the configuration of the “Interactivity Data” fragment.
  • the PDI-S is stored in the “Interactivity Data” fragment shown in FIG. 49 by adding a “PDI-S” element to the “PrivateExt” element defined at the bottom.
  • the broadcasting system of the present embodiment can also be applied to a broadcasting system that performs NRT broadcasting.
  • PDI-A provider side PDI-A
  • PDI-A query PDI-A query
  • PDI-S transmitted from the server 11 to the client 12 in the broadcast system 10 described above are SMT or NRT-IT (FIG. 29).
  • FIG. 50 shows an example of the syntax of “PDI descriptor”.
  • each descriptor to be described is defined together with the number of bits (No. of Bits) and a format (Format).
  • PDI-A PDI-A query
  • PDI-S is described in a descriptor “PDI_S or PDI_A or PDI_A_Query” that is a variable bit.
  • the broadcasting system of the present embodiment may be applied to the above-described broadcasting system that broadcasts using the ATSC-M / H system and the broadcasting system that broadcasts NRT broadcasting using a system other than the line broadcasting system. Good.
  • PDI-A (user side PDI-A and provider side PDI-A) is generated as metadata of text representation such as XML and used for filtering (matching processing). It was. That is, in filtering, texts (XML instances) are compared with each other to determine whether or not they are the same.
  • the 51 includes a transmission unit 42, a content storage unit 45, a content distributor 46, a PDI-Q generator 411, a PDI-BA generator 412, and a metadata distributor 413.
  • the server 11 of FIG. 51 differs from the server 11 of FIG. 3 in that a PDI-Q generator 411, a PDI-BA generator are used instead of the PDI-Q generator 41, the PDI-A generator 43, and the metadata distributor 44. 412 and a metadata distributor 413 are provided.
  • the PDI-Q generator 411 generates PDI-Q that represents a question about the preference of the user (viewer) of the client 12, transmits the PDI-Q to the client 12 via the transmission unit 42, and supplies the PDI-Q generator 412 to the PDI-BA generator 412. .
  • the id element of the question defined by PDI-Q generated by the PDI-Q generator 411 is expressed by a bitmap index (bit string) as described later.
  • the PDI-BA generator 412 Based on the PDI-Q from the PDI-Q generator 411, the PDI-BA generator 412 represents an answer set by the provider in response to the above-described question about the user preference of the client 12 corresponding to the PDI-Q.
  • PDI-BA Preference-Demographic-and-Interest-Bitmap-Answer
  • provider-side PDI-BA is generated and supplied to the metadata distributor 413.
  • the metadata distributor 413 specifies (inquires) the content corresponding to the answer set by the provider from the content stored in the content storage unit 45 based on the PDI-BA from the PDI-BA generator 412.
  • the metadata distributor 413 generates content metadata including PDI-BA as the content metadata of the identified content, and transmits the content metadata to the client 12 via the transmission unit 42.
  • a reception unit 51 includes a reception unit 51, a content reproduction unit 55, a content storage unit 56, a PDI-BA generator 421, a PDI-BA storage unit 422, and a content filter 423.
  • the client 12 in FIG. 52 differs from the client 12 in FIG. 4 in that a PDI-BA generator 421, a PDI-BA storage are used instead of the PDI-A generator 52, the PDI-A storage unit 53, and the content filter 54. This is the point that a unit 422 and a content filter 423 are provided.
  • the PDI-BA generator 421 is expressed by a bitmap index that represents a user's answer to a question about the user preference of the client 12 corresponding to the PDI-Q based on the PDI-Q transmitted from the server 11.
  • PDI-BA (hereinafter referred to as user-side PDI-BA as appropriate) is generated and supplied to the PDI-BA storage unit 422.
  • the PDI-BA storage unit 422 stores the PDI-BA from the PDI-BA generator 421.
  • the PDI-BA stored in the PDI-BA storage unit 422 is read by the content filter 423 as appropriate.
  • the content filter 423 reads the PDI-BA from the PDI-BA storage unit 422, and the PDI-BA (user side PDI-BA) and the PDI- included in the content metadata of the content transmitted from the server 11. Filter content based on BA (provider side PDI-BA). The content filter 423 supplies the filtered content to the content reproduction unit 55 or the content storage unit 56 according to the filtering result.
  • the provider side such as a broadcaster
  • the provider side staff In response to the above operation, the PDI-Q generator 411 of the server 11 asks the viewer, that is, the user of the client 12, what kind of preference or attribute the PDI-Q generator 411 has in step S211. Is generated.
  • first to 50th lines in the syntax shown in FIG. 54 are basically the same as the first to 50th lines in the syntax shown in FIG. 34, detailed description thereof is omitted. .
  • FIG. 54 unlike FIG. 34, for each question defined by the names “QBA”, “QSA”, and “QAA” shown in the 26th, 33rd, and 48th lines. Answer (a element) types are defined as “BitmapBooleanURIType”, “BitmapStringURIType”, and “BitmapBase64BinaryURIType”, respectively.
  • the 51st line to the 57th line in FIG. 55 show the declaration of the attribute of the id element of the type defined by “BitmapAnyURIType”.
  • the 58th to 64th lines show the declaration of the attribute of the a element of the type defined by “BitmapBooleanURIType”.
  • the 65th to 71st lines show the declaration of the attribute of the a element of the type defined by “BitmapStringURIType”, and the 72nd to 78th lines show the a of the type defined by “BitmapBase64BinaryURIType”. Indicates the element attribute declaration.
  • the 51st to 78th lines in FIG. 55 are defined by the id elements of all questions defined by PDI-Q and the names “QBA”, “QSA”, and “QAA”.
  • the answer to the question (a element) is declared to be expressed by a bitmap index.
  • the answer (a element) to the question defined by the name “QAA” is in a format that can be understood only by the provider that set the question, and is unique to the provider in the provider concealment format encoded in Base64 format. Filtering parameters.
  • the id element of the question defined by the names “QBA” and “QSA” and the answer (a element) to the question are represented by a bitmap index. .
  • the id element of the question “ProviderA: 123” in the 10th line is expressed by a bit string “00000100000111”.
  • “Baseball” in the 13th line, “Basketball” in the 14th line, “Soccer” in the 15th line, and “Hockey” in the 16th line, which are options as answers to the question, are “0001”.
  • “,” “0010,” “0100,” and “1000” are expressed as bit strings.
  • the id element of the question “ProviderA: ProgramX: 123” in the 19th line is expressed by a bit string “00000100000101”.
  • “Never” in the 21st line, “Occasionally” in the 22nd line, and “Frequently” in the 23rd line are “001”, “010”, and “100” as options for answering the question. "It is expressed by a bit string.
  • the id element of the question for which the logical value type and the answer selection type answer are requested and the answer (a element) to each question are expressed by a bitmap index.
  • An answer to a question that asks for an integer value type and a character string type answer is selected from a plurality of (two or more) candidate choices, such as an answer to a question that asks a logical value type and answer selection type answer. Since it is not an integer but an integer value or a character string that is arbitrarily input by the user, it is not represented by a bitmap index. Also, according to the syntaxes of FIGS. 54 and 55, the id element of a question for which an integer value type and a character string type answer are requested can be expressed by a bitmap index, but here, it is not expressed by a bitmap index. And
  • step S212 the PDI-Q generator 411 of the server 11 transmits the generated PDI-Q to the client 12 via the transmission unit 42 and supplies it to the PDI-BA generator 412.
  • step S221 the receiving unit 51 of the client 12 receives the PDI-Q transmitted from the server 11 and supplies it to the PDI-BA generator 421.
  • the PDI-Q may be received by the client 12 each time it is broadcast (transmitted) at a predetermined time interval from a broadcast station as a provider in which the server 11 is installed. 12 may be received by the client 12 when the channel is adjusted to the broadcasting station where the server 11 is installed.
  • the PDI-BA generator 421 of the client 12 generates a user-side PDI-BA for the question defined by the PDI-Q received by the receiving unit 51. Specifically, when the PDI-BA generator 421 receives the PDI-Q from the server 11, the PDI-BA generator 421 displays a screen corresponding to the question defined in the PDI-Q on a display unit (not shown). By making the user (viewer) of the client 12 input or select an answer to the question, a user-side PDI-BA representing the answer is generated. That is, the PDI-BA generator 421 generates a user-side PDI-BA that represents an answer to a question defined in PDI-Q by interacting with the user.
  • the client 12 receives the PDI-Q in which only the question for which the logical value type and the answer selection type answer are defined in FIG. 56, and the received PDI-Q is displayed on the display unit (not shown) of the client 12. Assume that the screens shown in FIGS. 8, 10, and 11 are sequentially displayed as the screen corresponding to the question group defined by Q.
  • the user selects the selection button 62-1 as an answer to the question, and “ProviderA: described with reference to FIG.
  • the selection buttons 82-1, 82-3, and 82-4 are selected by the user as answers to the question, and “ProviderA: ProgramX: 123” described with reference to FIG. It is assumed that the selection button 92-2 is selected by the user as an answer to the question on the screen corresponding to the question.
  • the user-side PDI-BA generated by the PDI-BA generator 421 is as follows.
  • the first line indicates that “Common: 111” question id element and “True” is selected as the answer to the question.
  • the second line indicates that “Baseball”, “Soccer”, and “Hockey” are selected as the id element of the question “ProviderA: 123” and the answer to the question.
  • the bitmap index notation of each answer is “0001”, “0100”, “1000”, but multiple questions (from 1 to 3) are allowed for the “ProviderA: 123” question. “1101” obtained by ORing these bits is a bitmap index notation of the answer to the question “ProviderA: 123”.
  • the third line indicates that “Occasionally” is selected as the id element of the question “ProviderA: ProgramX: 123” and the answer to the question. Since the question “ProviderA: ProgramX: 123” is restricted to only one answer, it is not an OR combination of the bits in the bitmap index notation of the answer candidate, but “010” representing “Occasionally”. The bitmap index notation of the answer to the question “ProviderA: ProgramX: 123”.
  • each bit representing an answer in the user side PDI-BA is actually mapped to a binary field.
  • FIG. 57 shows an example of a response in the user side PDI-BA mapped to a binary field.
  • the id element of the question “ProviderA: ProgramX: 123” in the user side PDI-BA described above and the answer to the question are shown.
  • the upper 6 bits of the id element of this question represented by the bitmap index are mapped to the lower 6 bits of the 1-byte bit string B1, and the lower 8 bits of the id element of this question are 1 It is mapped to each bit of the bit string B2 of bytes.
  • 3 bits of the answer (a element) of this question is mapped to the lower 3 bits of the 1-byte bit string B3.
  • the id element of one question in the user-side PDI-BA and the answer to the question can be expressed by 3 bytes at most, and the question and the answer to it are specified only by the 3 bytes. Can do.
  • the PDI-BA generator 421 supplies the user-side PDI-BA generated in this way to the PDI-BA storage unit 422 and stores it.
  • the user-side PDI-BA stored in the PDI-BA storage unit 422 is used when determining whether or not the content distributed from the server 11 matches the user preference of the client 12, as will be described later. .
  • the PDI-BA generator 412 of the server 11 generates a provider-side PDI-BA for the question defined by the PDI-Q from the PDI-Q generator 411. This is supplied to the data distributor 413. Specifically, when the PDI-Q is generated by the staff of the broadcasting station (provider side), the PDI-BA generator 412 displays a display unit (not shown) on, for example, FIGS. Display the screen corresponding to the question defined in PDI-Q as explained, and let the broadcasting station staff enter or select the answer to the question, so that the provider side PDI-BA representing the answer can be selected. Generate.
  • the staff of the broadcasting station inputs or selects an answer corresponding to the content to be distributed as an answer to the question defined in PDI-Q. That is, the provider side PDI-BA generated by the PDI-BA generator 412 allows the provider side to take into account the preferences of the user (viewer) of the client 12 and allow the viewer to view the content to be distributed later. Information (answer).
  • the metadata distributor 413 selects the content corresponding to the provider side PDI-BA from the content stored in the content storage unit 45 based on the provider side PDI-BA from the PDI-BA generator 412. Identify (inquire).
  • the content specified here has a similarity between the response expressed by the provider-side PDI-BA from the PDI-BA generator 412 and the content metadata previously given to the stored content higher than a predetermined value. Alternatively, it may be pre-selected by the broadcast station staff as content that the user wants to view.
  • the content specified by the metadata distributor 413 is acquired from the content storage unit 45 by the content distributor 46.
  • step S215 the metadata distributor 413 determines the provider-side PDI-BA based on the content metadata given in advance to the content specified in step S215 and the provider-side PDI-BA from the PDI-BA generator 412. Generate new content metadata.
  • step S216 the transmission unit 42 distributes the acquired content to the content distributor 46 together with the content metadata generated by the metadata distributor 413.
  • content metadata in addition to the content metadata generated by the metadata distributor 44, content metadata defined by a standardization organization may be transmitted.
  • steps S213 to S216 do not need to be performed immediately after the process in step S212, but are performed until the PDI-BA is generated and stored in the client 12 owned by each user. It only has to be.
  • step S216 the content is distributed with the content metadata.
  • the content may not be distributed with the content metadata, and the content metadata including PDI-BA is transmitted to the client 12 in advance. Later, content corresponding to the content metadata may be distributed.
  • step S223 the reception unit 51 of the client 12 receives the content and content metadata distributed from the server 11, and the content filter 423 is received. To supply.
  • step S224 the content filter 423 performs matching between the user side PDI-BA stored in the PDI-BA storage unit 422 and the provider side PDI-BA included in the content metadata from the server 11.
  • the user-side PDI-BA described above is generated and stored as the user-side PDI-BA, and the provider-side PDI-BA shown below is transmitted from the server 11 as the provider-side PDI-BA. It has been done.
  • this provider-side PDI-BA has the same basic configuration as the user-side PDI-BA described above, a detailed description thereof will be omitted. However, this provider-side PDI-BA has the “ProviderA: 123” question. Indicates that “Baseball” has been selected as an answer to.
  • the content filter 423 compares the user-side PDI-BA and the provider-side PDI-BA, and if at least one answer to the question matches, the user-side PDI-BA and the provider-side PDI-BA If it is determined that there is a match and no answer to the question matches, it is determined that the user side PDI-BA and the provider side PDI-BA do not match. In this case, a bit representing “Baseball” is included in each of the answer to the question “ProviderA: 123” in the user-side PDI-BA and the answer to the question “ProviderA: 123” in the provider-side PDI-BA. Since they are the same in terms of being included, it is determined that the user side PDI-BA and the provider side PDI-BA match.
  • the PDI-BA shown below is transmitted from the server 11 as the provider-side PDI-BA.
  • This provider side PDI-BA indicates that “Basketball” is selected as an answer to the question “ProviderA: 123” and “Never” is selected as an answer to the question “ProviderA: ProgramX: 123”.
  • the answer to the question on the user side PDI-BA described above and the answer to the question on the provider side PDI-BA do not match, so the user side PDI-BA and the provider side PDI-BA match. It is determined that it is not.
  • the content filter 423 performs matching processing between the user side PDI-BA and the provider side PDI-BA.
  • step S225 the content filter 423 determines whether the user side PDI-BA and the provider side PDI-BA match. If it is determined in step S225 that the user-side PDI-BA matches the provider-side PDI-BA, the content filter 423 matches the user (viewer) preference of the client 12 with the content distributed from the server 11. The content is determined to be content, the content is supplied to the content reproduction unit 55 or the content storage unit 56, and the process proceeds to step S226.
  • step S226 the content reproduction unit 55 reproduces the content.
  • the content storage unit 56 stores (records) the content in step S226. The accumulated content is appropriately supplied to the content reproduction unit 55 and reproduced in accordance with a user operation instruction.
  • step S225 if it is determined in step S225 that the user-side PDI-BA and the provider-side PDI-BA do not match, the content filter 423 determines that the content distributed from the server 11 is the preference of the user (viewer) of the client 12 It is determined that the content does not meet the requirements, the content is discarded (deleted), and the process ends.
  • the server on the provider side, the server generates a PDI-Q representing a question about the user's preference, and the PDI-Q is transmitted to the client terminal.
  • the provider side PDI-BA representing the answer set by the provider side is distributed as content metadata of the corresponding content.
  • content metadata other than the content metadata defined by the standardization organization can be given to the content as content metadata according to the needs at that time.
  • the client terminal on the user side, the client terminal generates a user side PDI-BA representing the user's answer to the PDI-Q from the server, and the generated user side PDI-BA and the provider side PDI-BA from the server. Whether or not to acquire the content distributed from the server is determined.
  • content can be filtered by content metadata according to the needs at that time other than the content metadata defined by the standardization organization. Therefore, it is possible to acquire content according to the needs at that time.
  • the question defined by PDI-Q is a question that requires an answer of a logical value type and an answer selection type
  • the client side PDI- Since BA and provider-side PDI-BA are compared, costs such as CPU load and memory usage are not incurred compared to comparing text-side user-side PDI-A and provider-side PDI-A at a time. Even when a large amount of content is distributed, it is possible to filter the distributed content more efficiently.
  • the question defined by PDI-Q has been described as consisting only of questions that ask for answers of logical value type and answer selection type. However, there are questions that ask for answers of integer value type and character string type. Of course it may be included.
  • the PDI-BA user-side PDI-BA and provider-side PDI-BA
  • a text expression (arranged). (Numbers, character strings, etc.) will be generated.
  • PDI-S generator 43 includes a transmission unit 42, a content storage unit 45, a content distributor 46, a metadata distributor 413, a PDI-S generator 431, and a PDI-S execution unit 432.
  • the server 11 of FIG. 58 differs from the server 11 of FIG. 51 in that a PDI-S generator 431 and a PDI-S execution unit 432 are provided instead of the PDI-Q generator 411 and the PDI-BA generator 412. It is.
  • the PDI-S generator 431 generates PDI-S, which is a script for obtaining a user-side PDI-BA that represents a user's answer to a question about the user (viewer) preference of the client 12, and sends the PDI-S via the transmission unit 42. Are transmitted to the client 12 and supplied to the PDI-S execution unit 432.
  • the PDI-S execution unit 432 executes the PDI-S from the PDI-S generator 431, so that the provider side PDI-BA representing the answer set by the provider side is answered to the question about the user preference of the client 12. It is generated and supplied to the metadata distributor 413.
  • 59 includes a reception unit 51, a content reproduction unit 55, a content storage unit 56, a PDI-BA storage unit 422, a content filter 423, a PDI-S execution unit 441, and a history information storage unit 442.
  • the client 12 of FIG. 59 differs from the client 12 of FIG. 52 in that a PDI-S execution unit 441 is provided instead of the PDI-BA generator 421 and a history information storage unit 442 is newly provided.
  • the PDI-S execution unit 441 executes the PDI-S transmitted from the server 11 to generate a user-side PDI-BA that represents the user's answer to the question about the user preference of the client 12.
  • the data is supplied to the BA storage unit 422.
  • the PDI-S execution unit 441 executes PDI-S based on history information to be described later as necessary.
  • the history information storage unit 442 stores history information representing the action history of the user who owns the client 12.
  • the history information stored in the history information storage unit 442 is read by the PDI-S execution unit 441 as necessary.
  • the content transmission / reception processing and PDI-S execution processing shown in the flowcharts of FIGS. 60 and 61 are performed on the user side PDI-BA and provider side instead of generating the user side PDI-A and provider side PDI-A. Except for the point where the PDI-BA is generated, the content transmission / reception process and the PDI-S executed by the broadcasting system 10 according to the second embodiment described above are shown in the flowcharts of FIGS. 33 and 35. Since it is basically the same as the execution process, its description is omitted.
  • the user-side PDI-BA and provider-side PDI-BA are generated in the same manner as the user-side PDI-BA and provider-side PDI-BA in the content transmission / reception process described with reference to the flowchart of FIG.
  • the server on the provider side, the server generates a PDI-S for obtaining the user-side PDI-BA for the question about the user's preference, and the PDI-S is the client terminal.
  • the provider side PDI-BA representing the answer set by the provider side is distributed as content metadata of the corresponding content to the PDI-S.
  • PDI-S from the server is executed by the client terminal to generate the user side PDI-BA, and the generated user side PDI-A and the provider side PDI-BA from the server Whether or not to acquire the content distributed from the server is determined.
  • content can be filtered by content metadata according to the needs at that time other than the content metadata defined by the standardization organization. Therefore, it is possible to acquire content according to the needs at that time.
  • the question defined in PDI-S is a question that requires an answer of a logical value type and an answer selection type
  • the user side PDI- Since BA and provider-side PDI-BA are compared, costs such as CPU load and memory usage are not incurred compared to comparing text-side user-side PDI-A and provider-side PDI-A at a time. Even when a large amount of content is distributed, it is possible to filter the distributed content more efficiently.
  • the client terminal can interact with the user through PDI-S, even if the questions set on the provider side require a high degree of interactivity, it is possible to sufficiently interact with the user. become able to. Therefore, it is possible to generate user-side PDI-BA that accurately reflects the user's preferences, so it is possible to obtain accurate filtering conditions, and more reliably to acquire content that meets the needs at that time. Is possible.
  • the above-described broadcasting system of the present embodiment can also be applied to a broadcasting system that performs broadcasting in the ATSC-M / H system.
  • the PDI-BA has at least one of the “Service” fragment, the “Schedule” fragment, and the “Content” fragment among the elements constituting the Service Guide shown in FIG. Stored in one.
  • FIG. 62 shows the details of the configuration of the “Service” fragment.
  • the PDI-BA is stored in the “Service” fragment shown in FIG. 62 by adding a “PDI-BA” element to the “PrivateExt” element defined at the bottom.
  • the byte-coded bitmap index is encoded as base64 binary.
  • FIG. 63 shows details of the configuration of the “Schedule” fragment.
  • the PDI-BA is stored in the “Schedule” fragment shown in FIG. 63 by adding a “PDI-BA” element to the “PrivateExt” element defined at the bottom.
  • the byte-coded bitmap index is encoded as base64 binary.
  • FIG. 64 shows the details of the configuration of the “Content” fragment.
  • the PDI-BA is stored in the “Content” fragment shown in FIG. 64 by adding a “PDI-BA” element to the “PrivateExt” element defined at the bottom.
  • the byte-coded bitmap index is encoded as base64 binary.
  • the PDI-Q or PDI-S is stored in the “Interactivity Data” fragment among the elements constituting the Service Guide shown in FIG.
  • the broadcasting system of the present embodiment can be applied to a broadcasting system that performs NRT broadcasting.
  • the PDI-BA (provider-side PDI-BA) transmitted from the server 11 to the client 12 in the broadcasting system 10 described above is a new “PDI descriptor” defined in SMT or NRT-IT (FIG. 29). Is stored and transmitted.
  • FIG. 65 shows an example of the syntax of “PDI descriptor”.
  • each descriptor to be described is defined together with the number of bits (No. of Bits) and a format (Format).
  • PDI-BA is described in a descriptor “PDI_BA” which is a variable bit.
  • the broadcasting system of the present embodiment may be applied to the above-described broadcasting system that broadcasts using the ATSC-M / H system and the broadcasting system that broadcasts NRT broadcasting using a system other than the line broadcasting system. Good.
  • the series of processes described above can be executed by hardware or software.
  • a program constituting the software may execute various functions by installing a computer incorporated in dedicated hardware or various programs. For example, it is installed from a program recording medium in a general-purpose personal computer or the like.
  • a program recording medium that stores a program that is installed in a computer and can be executed by the computer includes a magnetic disk (including a flexible disk), an optical disk (CD-ROM (Compact-Disc-Read-Only Memory), DVD (including Digital Versatile Disc), magneto-optical disk), or removable media 31 which is a package medium made of semiconductor memory, or ROM 22 where programs are temporarily or permanently stored,
  • the storage unit 28 is configured by a hard disk or the like.
  • the program is stored in the program recording medium using a wired or wireless communication medium such as a local area network, the Internet, or digital satellite broadcasting via a communication unit 29 that is an interface such as a router or a modem as necessary. Done.
  • the steps for describing a program are not only processes performed in time series in the order described, but also processes that are executed in parallel or individually even if they are not necessarily processed in time series. Is also included.
  • system represents the entire apparatus composed of a plurality of apparatuses.

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PCT/JP2011/068678 2010-08-27 2011-08-18 送信装置および方法、受信装置および方法、並びに送受信システム WO2012026389A1 (ja)

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CN201180040279.0A CN103081503B (zh) 2010-08-27 2011-08-18 发送设备和方法、接收设备和方法以及发送和接收系统
EP11819852.2A EP2611150A4 (de) 2010-08-27 2011-08-18 Sendevorrichtung und -verfahren, empfangsvorrichtung und -verfahren sowie sende-/empfangssystem
MX2013002021A MX2013002021A (es) 2010-08-27 2011-08-18 Aparato y metodo de transmision, aparato y metodo de recepcion, y sistema de transmision/recepcion.
KR1020187021202A KR20180087459A (ko) 2010-08-27 2011-08-18 송신 장치 및 방법, 수신 장치 및 방법, 및 송수신 시스템
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